Temporary lights always broken - Cliff Pope
On my way to work I pass a 3 mile stretch of major roadworks where a narrow A road is being upgraded, widened, bends taken out. Work has now stopped because of the constant rain, leaving a long muddy building site and a series of about three or four sets of temporary traffic lights.

Every morning one or more of these are faulty. Either totally out, or stuck on red one or both ways, or flicking erraticaly from red to green.
What is the legal position? Is one allowed to ignore faulty lights? This morning a long stretch was permanently green in the opposite direction, no lights at all in mine. When the road was clear I went, and met a car head on. We passed by sidling round a site hut.

As the lights are the contractor's, not local authority, do they actually have any legal authority?